ext/phar: use size_t type instead of int

Author: Girgias

NEWS

@@ -37,6 +37,8 @@ PHP                                                                        NEWS
   . Fix file descriptor/memory leak when opening central fp fails. (nielsdos)
   . Fix memleak+UAF when opening temp stream in buildFromDirectory() fails.
     (nielsdos)
+  . Fix potential buffer length truncation due to usage of type int instead
+    of type size_t. (Girgias)
 
 - Random:
   . Fix Randomizer::__serialize() w.r.t. INDIRECTs. (nielsdos)

ext/phar/phar.c

@@ -1590,7 +1590,7 @@ int phar_open_from_filename(char *fname, size_t fname_len, char *alias, size_t a
 }
 /* }}}*/
 
-static inline char *phar_strnstr(const char *buf, int buf_len, const char *search, int search_len) /* {{{ */
+static inline char *phar_strnstr(const char *buf, size_t buf_len, const char *search, size_t search_len) /* {{{ */
 {
 	const char *c;
 	ptrdiff_t so_far = 0;

ext/phar/stream.c

@@ -673,7 +673,7 @@ static int phar_wrapper_unlink(php_stream_wrapper *wrapper, const char *url, int
 {
 	php_url *resource;
 	char *internal_file, *error;
-	int internal_file_len;
+	size_t internal_file_len;
 	phar_entry_data *idata;
 	phar_archive_data *pphar;
 	uint32_t host_len;